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[Moved]: ADS Cosimulation high current drawn from source!

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iampadik

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Hey guys !

I did cosim of my amplifier and it is working fine. The currents at the transistor pins are right. But the total current drawn from the source is 3.3kA .. Why this must be happening? Any ideas? and whats the solution?

Thanks..
 

Re: ADS Cosimulation high current drawn from source!

Luckily it's only a simulation...

If you see where the current flows, you probably understand why.
 

Re: ADS Cosimulation high current drawn from source!

Current from supply to ground? Maybe you miss a DC block (capacitor) somewhere?
 

Re: ADS Cosimulation high current drawn from source!

Currents at transistors are right. The DC supply port shows this high current.
 

Re: ADS Cosimulation high current drawn from source!

Yes, current at main supply with respect to gnd. I have checked all the blocking caps. They are at the appropriate places..
 

iampadik said:
HI.. Do you know why it must be happening? It's a little urgent.
Click to expand...

A widely used simulator suddenly gives unexpected results.

Please tick an answer:
[ ] simulator is broken.
[ ] modelling mistake.

How can you expect help if you don't show/upload your model?

If this is co-simulation, my guess is that you made the usual mistake: DC not included in EM model frequeny range, so that ADS uses extrapolation from GHz to DC. This would show a clear warning in the simulation. Show what you did, and we don't have to guess.
 
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